<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>localStorage</title>
</head>
<body>
<h2>localStorage</h2>
<button onclick="saveData()">点我保存一个数据</button>
<br/>
<button onclick="readData()">点我读取一个数据</button>
<br/>
<button onclick="deleteData()">点我删除一个数据</button><br/>
<button onclick="clearData()">点我清空数据</button>
<br/>
<script type="text/javascript">
    function saveData() {
        let p = {name: '张三', age: 18};
        localStorage.setItem('message', 'hello!');
        localStorage.setItem('message02', 666);
        localStorage.setItem('person', JSON.stringify(p));
    }

    function readData() {
        console.log(localStorage.getItem('message'))
        console.log(localStorage.getItem('message02'))
        const x = localStorage.getItem('person')
        console.log(JSON.parse(x))
    }

    function deleteData() {
        localStorage.removeItem('message')
    }
    function clearData() {
        localStorage.clear()
    }

</script>

</body>
</html>
